Site description
This forest lies 32 km north-west of Maroantsetra, north-east of Andaparaty-Ambinanitelo. The terrain is undulating, with steep slopes and high peaks making access difficult. Three main rivers, permanent and turbid, flow to the south-west of Anjanaharibe peak: the Ambalanirana, Antsahabe and Longozabe. The Ambalanirana river is a tributary of the Sahantaha river. Low- and mid-altitude, dense, humid evergreen forest covers the site, and is dominated by Weinmannia, Canarium and Dalbergia. Areas of previous slash-and-burn cultivation are overgrown by secondary thicket, dominated by Harungana trees, traveller’s palm Ravenala and wild ginger Aframomum.

Key biodiversity
See Box and Tables 2 and 3 for key species. Seventy-one species are known from the site, of which 37 are endemic to Madagascar.